Bicycle horn



FIG. 1 is an upper front perspective view showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view, the left side being a mirrorimage thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a bicycle horn, as shown and described.